Cummins 3408501 Engine Control Module

This listing is for the Cummins 3408501 ECM ECU engine control module. The number is clear enough to begin a parts inquiry, though it does not tell us every detail of the original installation.

The equipment notes list 3408501 with Cummins engines in industrial machinery and industrial diesel engine categories. Use that as an application lead only, then confirm the actual engine, label, and connector from the old unit.

The old controller is the useful reference

Please check the label on the unit you are replacing. A good photo should show the complete part number, not only a few digits. The connector side matters too. Look at the plug shape, pin arrangement, locking part, and any marks around the socket.

Some cases look alike at a quick glance. Compare the cover, corners, mounting points, and label position before deciding that the unit is the same.

The categories above are not a fixed machine fitment promise. Send the original installation information with the photos so the application can be checked from the actual part.

Information for a quote

old ECM label photo
connector and housing photos
machine or engine details from the installation
required quantity and destination

If the old controller has a broken connector, water marks, or a damaged label, include that in the message. It is better to say what is missing than to guess.

A quick photo comparison

Place the old module beside the product images. Match the 3408501 number, then compare the plug and case. If one of those points does not line up, pause the order and ask for a check.